Gasoline economizer



Nav. 4, 1952 GADDONI Y GAsoLmE EcoNoMIzER Filed Nov. 28, 1945 ATTORNEYPatented Nov. 4, 1952 UNITED STATES PATENT OFFICE GASOLINE ECONOMIZERLouis Gaddoni, New Rochelle, N. Y.V

Application November 28, 1945", Serial N o., 631,241

(Cl.V 13.7.-480

2 Claims. l

This invention relates to improvements in gasoline economizers moreparticularly of the type disclosed and claimed in my application. Ser.No. 546,010, iiled July 21, 1944, now Patent. No. 2,581,478,l January 8,1952.

In thati application I have disclosed a valve casing consisting of twoelements one, of which isv adapted to be. attached. tov an intakemanifold and to be threaded into. the other element. which is providedwith a valve guide and a valve seat for cooperationwith an elongatedvalve. provided with longitudinally extending tapered. airemetering:grooves'v in its. outerA surface., The valve is pressed against its seatby' a. spring interposed between the valver and the inst-mentionedelement with suflioient pressure. to cause it to remain seated duringcranking operations. By adjustment of the compression of the` spring,the valve may be controlled to admit and meter air in proper quantitiesduring idling and running operations.

Objects of this invention are the provision. of improved means foreffecting a line, and accurate adjustment of the valve, improvedv meansfor lockingly maintaining such adjustment, improved means for admittingair in, larger volume as` the suction pressure increases and improvedmeans for preventing fluttering of the valve in response to the normalrapid variations from the mean of the suction pressure established inthe intake manifold under any given unchanging conditions of operation.

Other objects of this invention will appear from the followingdescription taken in connection with the drawings, in which,

Figure 1 shows in side elevation an engine, an intake manifold and acarburetor diagrammatically, with my improved air intake valve mountedon the manifold;

Figure 2isl an axial section through the air intake valvej Figure 3` isa similar section showing the air intake valve in an operated position;

Figure i is a section on the line 4--4 of Figure 21;l and Figure 5 is aAdetail showing a preferred relationship between the adjusting andlocking threads.

In Figure l I have shown dagrammatcally a gasoline engine at 6, anintake manifold at 1, a

carburetor at 8 and my improved air intake valve at 9 mountedhorizontally on the manifold at the point where the stream of explosivemixture enters the horizontal distributing section of the manifold. Thevalve may be mounted in a vertical position in the center of the topwall of the distributing section of the manifold, orit may be mountedanywhere between the throttle l0 and the manifold proper, or it may beconnected to any vacuum pipe, such as that4 leading to the windshieldwiper, the gear shiftv booster, etc.

The throttle is of the usual'y construction and is operated by the usualaccelerator pedal and an adjustable stop l I is provided to control or xthe released or closed position of the throttle.

The, casing of myl improved air intake valve 9, as viewed in an invertedposition in Figure 2, comprises a cylindrical housing l5 provided with abore of three diierent diameters. The lowermost bore section I 6constitutes the airintake` port of the valve which is` of suflicientcross sectional area to admit the greatest amount of air required. Ifdesired, an air filter casing containing any suitable ltering materialmay be threaded on the lowerl end of the housing l5 as shown in saidapplication.

The bore section I6 communicates with a slightly larger diameterA longbore section 20 in which operates the valve 2l of myl invention. The

i valve has a sliding fit in the bore section 20 and is of substantiallythe same length as indicated to provide for a large amount of movementbe tween its closed end fully open positions and to provide for acertain amount of inertia. The lower or front end of the valve '2| isYconicalA as at 22 to seatl on a conical seatI 23 formed on the shoulderbetween the bore sections i6' and 2D. The outer face ofthe valve. isprovided with pairs of diametri'cally oppositely located air-meteringgrooves 24, 25' and 25 of different lengths and of increasing depthsrrom a point near the upper or rear endY of the valve toward the loweror front end ofJ the valve so as to. admit a small amount of airI pastthe. inner 0r rear end' o1 the bore section Zit when the valve is rstmoved away from its seat and; increasing amounts of' air as the movementof the valve, away from its seat is; continued by stronger suction. inthe manifold. The grooves may bev of the. same depths at the lower orfront end of the valve.

The. upper end of the cylindrical housing l5 is closed by a member 2Twhich has an enlarged head 28 on its lower end threaded as indicatedinto the. upper large section 29 of the bore in the housing i5 wherebythe member '2,1 and the housing l5, which together constitute the valvecasing, may be relatively adjusted toward and away from each other forcontrolling the spring pressure on the valve.

The member 21 is threaded at its upper end as indicated at 30 forthreaded engagement in a hole in the intake manifold I.

The member 21 is provided with a throughbore, the upper end section 3|of which is of sufiicient size to permit the largest amount of airrequired to pass therethrough into the intake manifold. The lower endsection of the bore is enlarged as at 32 to provide an axial recess toreceive one end of a weak valve seating spring 34. The lower end of thespring 34 is seated in a long axial recess 35 in the valve 2|.

The lower end of the enlarged bore section 32 terminates in one or moretransverse grooves 36 extending diametrically and laterally beyond theouter face of the valve and of no greater wi-dth than the diameter ofthe enlarged section 32 of the bore which is of less diameter than thatof the valve with the result that when the upper end of the valve 2| isforced against the lower end of the member 2l, air will be permitted topass by the valve into the bore 32, etc. The member 2'I may be screwedfar enough into the housing I to engage Vand seat the valve 2| as shownin Figure 2.

Projecting upwardly from the bottom of the recess 35 in the Valve 2| isa rod 40 which is provided with fins or threads as indicated at 4| forsteadying the movements of the valve and preventing it from respondingto slight variations from the mean of the suction pressure establishedin the intake manifold under any given unchanging conditions ofoperation. The inrushing air impinges on the ns or threads and exerts aslight inward pull or drag on the valve and functions as a brake againstan outward movement of the valve due to slight decreases at frequentintervals in the suction pressure such as occurs in the operation `ofthe engine at a so-called constant suction pressure. The Valve is,therefore, open the required amount when the suction pressure increasesto the mean to admit the proper amount of air.

For the purpose of locking the valve in adjusted position I provide thestem of the member 2'I with threads to receive a lock nut 45 which inall positions of adjustment may be drawn up against the upper or rearend of the housing I5. The cooperating threads on the head 28 and thehousing I5 are preferably of small pitch, such as sixteen threads to theinch as shown in Figure 5, to provide for a fine adjustment of thespring and Valve. The cooperating threads on the member 2'I and the locknut 45 are preferably of a slightly smaller pitch, such as eighteen tothe inch as shown in Figure 5, and both sets of cooperating threads arepreferably of the same turn or direction so that the parts may be lockedin adjusted position by seizing the lock nut 45 and housing I5 andturning them clockwise after the lock nut has been advanced against thehousing. The lock nut is released by turning both the lock nut and thehousing I5 counter-clockwise.

The valve is in the locked closed position when it is mounted inposition on the manifold or in a vacuum line. It is preferably mountedin a Vertical position. After the valve has been so mounted, the engineis started and idled until it is warmed. The housing I5 is then backedup by a counter-clockwise movement until the engine misses or fails tore evenly. The housing I5 may then be turned clockwise a short distance,or a 4 minor readjustment may preferably be made of the idle jet screwon the carburetor (not shown) until the ring is again even, after whichthe lock nut is advanced against the housing and both the housing andthe lock nut are then turned clockwise to lock the parts in adjustedposition. Further minor adjustments may be made of the valve if founddesirable for better performance at cruising speeds.

While I have described this invention with reference to a preferredembodiment illustrated,

it is to be understood that I reserve the right to all such changes asfall within the principle of this invention and the scope of theappended claims.

I claim:

1. An air intake valve consisting of a valve casing, comprising, inseries, an inlet passage, a valve seat, a guide chamber of largerdiameter than the inlet passage, a second chamber of larger diameterthan the guide chamber and an outlet passage, and a piston valveslidable in the guide chamber and biased toward closed position, saidvalve having a head co-acting with said seat, said Valve having twoidentical sets of grooves of different lengths, extending longitudinallyfrom the head, in which the grooves of same lengths are disposed atopposite ends of a diameter and in which all of the grooves are taperedwith their largest cross section adjacent to the head and in which allof the grooves terminate within the guide when the valve is seated.

2. An air intake valve consisting of a valve casing, comprising inseries in axial alinement an inlet passage, a valve seat, a guidechamber of larger diameter than the inlet passage, a sec'- ond chamberof larger diameter than the guide chamber and an outlet passage, and apiston valve slidable in the guide chamber and biased toward closedposition, said valve having a head adapted to co-act with said seat, andprovided in4 its outer face with grooves of increasing cross sectiontoward said head, and a rigid axial reduced extension on the inner endof the piston projecting into the outlet passage and provided withtransversely extending ribs projecting toward but spaced from theinterior wall of the outlet passage.

LOUIS GADDONI.

REFERENCES CITED The following references are of record in the filel ofthis patent:

UNITED STATES PATENTS Number Name Date 45,390 Cresson Dec. 13, 1864371,063 Hays Oct. 4, 1887 `591,745 DuBrul Oct. 12, 1897 680,329 HopkinsAug. 13, 1901 731,218 Perkins June 16, 1903 1,120,118 Ashlock Dec.'8,1914 1,246,458 Philbrook Nov. 13, 1917 2,038,229 Martin Apr. 21, 19362,224,216 Coberly Dec. 10, 1940 2,320,050 Peterson May 25, 1943 FOREIGNPATENTS Number Country Date 119,521 Australia Feb. 5, 1945 702,108France July 23, 1930

